Fe and Mn occur in calcite cements depending on the oxidizing-reducing conditions of cementing waters, which may change according to depositional and diagenetic environments. In red beds, Mn and Fe are available from the ferruginous matrix. Thus, it is possible to know the oxidizing-reducing conditions of fluids that precipitated calcite as a function of Mn and Fe content in calcite cement. A detailed petrological (with special attention to cathodoluminescence) and geochemical analysis of these cements is a useful tool to constrain the diagenetic evolution of red beds and the history of the basin where they deposited. © 2006 Elsevier B.V. All rights reserved.
- Calcite cement
- Oxidizing-reducing conditions
- Red beds